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  Date: 2018/12/2
  Time: 12:34
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<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Index</title>
</head>
<body>
<h4>Welecome to servlet 3.0</h4>
<a href="${pageContext.request.contextPath}/hello">helle servlet</a>
<br/><br/>
<a href="${pageContext.request.contextPath}/asynchello">helle servlet async</a>
</body>
</html>
